Antithrombin
Definition
A plasma glycoprotein synthesized by the liver, playing the major physiological role of inhibiting coagulation enzymes, specifically thrombin and factor Xa, thereby preventing the formation of parasitic blood clots. Clinically designated as antithrombin III, this macromolecule represents the most important natural anticoagulant in the human body, its efficiency being exponentially amplified by heparin, which is why its hereditary deficiency dramatically increases the risk of venous thromboembolism.
Bilingual Equivalents
- Antithrombin
- Antithrombin III
Grammatical & Source Details
| Inflection Type | Feminine noun, regular declension with standard structural plural mutations in Romanian. |
| Formation | Derived through biochemical prefixation, combining the oppositional modifier 'anti-' with the enzyme name 'thrombin'. |
| Spelling / Pronunciation | [an.ti.trom.ˈbi.nă] |
| Source | The Merck Manual and International Nomenclature of Hematological Proteins |
Contextual Usage Examples
RO: Testele de laborator au relevat o activitate scăzută a antitrombinei III, explicând tromboza recurentă.
EN: Laboratory tests revealed a low activity of antithrombin III, explaining the recurrent thrombosis.
RO: Administrarea de heparină își pierde eficiența dacă pacientul suferă de un deficit sever de antitrombină.
EN: Heparin administration loses its efficacy if the patient suffers from a severe antithrombin deficiency.
RO: Concentratul de antitrombină purificată este utilizat ca tratament substitutiv în timpul intervențiilor chirurgicale cu risc ridicat.
EN: Purified antithrombin concentrate is used as a replacement therapy during high-risk surgical procedures.
Idioms & Phrases
Deficit ereditar de antitrombină / Hereditary antithrombin deficiency
RO: Mutare genetică rară care predispune persoana afectată la episoade trombotice repetate încă de la o vârstă tânără.
EN: A rare genetic mutation that predisposes the affected individual to repeated thrombotic episodes from a young age.
Complex trombină-antitrombină / Thrombin-antithrombin complex
RO: Structură moleculară stabilă măsurată în plasmă ca marker direct al activării recente a cascadei de coagulare.
EN: A stable molecular structure measured in plasma as a direct marker of recent coagulation cascade activation.
Potențare prin heparină a antitrombinei / Heparin potentiation of antithrombin
RO: Mecanism biochimic prin care anticoagulantele injectabile accelerează de mii de ori legarea inhibitorului de enzima țintă.
EN: A biochemical mechanism whereby injectable anticoagulants accelerate the binding of the inhibitor to the target enzyme thousands of times over.
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